Adjustable casing for electric-lamp sockets.



UNITED STATES oriennnon n. erlernt, or

.ADJUSTAB'LECASENG F02?, .ELECTEZUL Application filed January 24, 1910.Serial No.

.To all' whom it may concern:

le it known that I, CLARENCE D. Piers, e citizen of 'the United States,and e resident of Bridgeport, in the county oit' Fairn iield and Stateof Connecticut, have invented icertain new and 'useful Improvements inAdjustable Casings for Electric Lamp Sockets, of which clear, and exactdescription, whereby one skilled in the ort may malte and use thesaine.-

The invention relates to o shell or closure e lmnp socket and pertainsmore port-ieu- .larly to o twopart shell or csing to be usedinterlocking the shell part and the cop part oi o casing through apositive locking means 'which will hold 'the-ports together throughouttheir 'entire pempheral contacting suru faces.

.A iurther ohgect is to provide e locking 'which Will permit insertionor re 'inoval of the shell part with reference to` the oep, Withoutrequiring a tilting' motion of the shell.

A still further object is to provide for positive locking of the shelland cap against relative rotary end longitudinel movements.

^ Refering to the 'drawingsz-Figure l is o `View in elevation of theshell including the cap. Fig.` 2 is a vertical sectional view. Fig.' 3`is o cross-sectional View through. the locking lugs. Fig. 4 is across-sectionztl view in much .enlarged scale through the moin lug,which prevents ,relative rotation of the parte on o horizontal plane.Fig. is o cross-sectional View similar to Fig. l through one of thelongitudinal locking lugs. F

is o vertical section through4 `the moin ig lug illustrated in Fig. eland token lit angles to the section of said figure. is a Verticalsection through the lockigs illustrated in Fig. 5, token :it right `s tothe section oi seid ligure. 8 illustrates the method of removing theshell trom the cop by a simple longitudinal .movement of the parts espermitted by the invention. Fig. 9 illustrates the tilting movementnecessary for removal of `the shell from the Cep commonly used indevices of' the `zirt. J

In devices of the character herein deW Spe-silicati@ of n..

the following is o full,

vfor incasing the several connector parts of,

scribed, :it

iu onct joints, periorations and other in' for interlocking the eapfpartand the shell gert of o.. socket closure, but in said devices, so for esknown, there have been objections.v

Generally speaking, ineens have been provided for prevent-ing rotary andlongitudiv ent parte eiter they were nl "ferions ineens have beenenisuoli en interlocking enin such devices, so .u disadvantages havebeen inherent to 't e structures. lior instance, either tile esp oisliell-pnit has been greatly weakened hy cuttinoj away portions thereofto permit longitudinel engagement of the ,parts and prei/ent rotorymovements thereof, Agein, bayonet oint engogenients have been employedwherein either the cap or shellpart nos been ont away greatly weakeningit in 'orderto permit the initial sliding, engagement sind rotarymovement to secure .interloolring,` ot the cop end shell. Even in suchdevices es elooverecited, wherein the esp' or shellport has beenweakened hy cutting away the material,

shown. n

Frein 'l shove, it will he seen that even disregeicir the Weel iing ofthe parte of the structure hy cutting; away the instel, there is edisadvantage in having device in'whicli the ports niust loe separated bye hinge-action. Where sockets ure employed in s. receptacle or shellvwhich is necessarily inside to contorni closely to 'the outlines of thesocket and cover, it is very dillicult to adjust 'the shell port to thecop-part of the socket, if ports ore to he seperated by e hinge-action.ln feet, it is practically inipossihie in innny ceses to separate theshell from the cop, :is the tilting movement ot the shell required forreleasingthe ports is hampered by the t husk l or other embellishing;'lixture surroicoding` the socket.

The socket onsings are ordinarily made of very thin spun metal endifthis nietol is weakened by cutting away portions thereof es in thereseoi bayonet joints or other engaged from the locking opening 32,whereupon the casing 35, may be tilted until the lug 33, is disengagedfrom the locking opening 3l. In such an instance, the ange of the capmust be weakened by cutting away material to receive the lug 36, whichAprevents rotary movement-f the parts and in such acase, the/parts can`be assembled in only one position. In the device hereinabove described,any one of the vlocking perforations will coperate withthe locking lugsto irmly engage the cap' and shell-parts and this, without any i cuttingaway of the metal of said'parts eX- cept, of course, where theperforations oc cur. Ihere" is solid metal to preventl removal of theshell from thejcap and there is -solid metal to revent relative rotationof the parts. -As illustrated herein, the perfober.

rations in the cap and the'corresponding locking lugs 'are indicated. asfour in num- It is' obvious, however, that .the numbr and position ofthe perforations and lugs `might be varied to suit the eXigenci'es ofany particular case. However, they should bev 'of such a number as tofirmly lock the shellpart and the cap-part' at various'arcs offthemeeting peripheries so that the structure is substantially a irmandsolid'structure. unl

til the main locking lug 13, isremoved from its locking perforation.

the device may be assembled or separated.

What I claim as my invention and desire f to secure b Letters Patentvis 1. A caslng for electric lamp socketscomprising a cap and shellmember, one of said members provided with a Lplurality of perorations,the other of' sai parts provlded with a corresponding number ofinterlocking lug members, part of said members adapted for disengagementfrom the cap upon partial relative rotation of the cap and shell,andlocking means adapted for.

disengagement with the locking perforations only upon compression ofsaid shell,"allof said locking lugs coperating to lock/'the' shell andcap against longitudinal move- 2. A casing for electric lamp' socketscom prising a shell and cap member, perforations formed in one of saidmembers coperating locking lugs in the other ofsaid members, said lugs`beveled topermit telescopicv engagement of the cap and shell, and ap0si' tive locking lug to prevent relative rotation of the parts,`though Vpermitting direct longitudinal separation thereof whendisengaged from its coperating perforation. 3..-A casing for electriclamp sockets comprising a cap and shell-part, one of said' partsprovided with equidistant erforations of identical, form, the other osaid parts provided with locking lugs corresponding in number to theprforations, beveled surfaces' on all of saidlugs to permit telescopicen` gagement of the cap and shell, one ofsaid lugs providedwit-hshoulders vto prevent relative rotation of the` parts-and lon itudinalseparationthereo'the remaining ugs rovided with locking,r shoulders toprevent ongitudinal separatlon of-the arts,- and beveled.surfaces topermit relative rotation of the parts when the first. named-locking luis disengaged from its locking opening, an means whereby one of theparts may be disengage the main locking lug.

CLARENCE PLAT'I.,

Witnesses WILLIAM L. vALEMNDER,A `monas N. SEARS.

compressedfwith reference to the' other vlto

